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https://github.com/catchorg/Catch2.git
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fc3d11b1d1
This is kinda messy, because there is no good way to signal to the compiler that some code uses direct comparison of floating point numbers intentionally, so instead we have to use diagnostic pragmas. We also have to over-suppress the test files, because Clang (and possibly GCC) still issue warnings from template instantiation even if the instantion site is under warning suppression, so the template definition has to be under warning suppression as well. Closes #2406
121 lines
4.2 KiB
CMake
121 lines
4.2 KiB
CMake
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# Copyright Catch2 Authors
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# Distributed under the Boost Software License, Version 1.0.
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# (See accompanying file LICENSE_1_0.txt or copy at
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# https://www.boost.org/LICENSE_1_0.txt)
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# SPDX-License-Identifier: BSL-1.0
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include(CheckCXXCompilerFlag)
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function(add_cxx_flag_if_supported_to_targets flagname targets)
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check_cxx_compiler_flag("${flagname}" HAVE_FLAG_${flagname})
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if (HAVE_FLAG_${flagname})
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foreach(target ${targets})
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target_compile_options(${target} PUBLIC ${flagname})
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endforeach()
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endif()
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endfunction()
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# Assumes that it is only called for development builds, where warnings
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# and Werror is desired, so it also enables Werror.
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function(add_warnings_to_targets targets)
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LIST(LENGTH targets TARGETS_LEN)
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# For now we just assume 2 possibilities: msvc and msvc-like compilers,
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# and other.
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if (MSVC)
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foreach(target ${targets})
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# Force MSVC to consider everything as encoded in utf-8
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target_compile_options( ${target} PRIVATE /utf-8 )
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# Enable Werror equivalent
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if (CATCH_ENABLE_WERROR)
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target_compile_options( ${target} PRIVATE /WX )
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endif()
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# MSVC is currently handled specially
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if ( CMAKE_CXX_COMPILER_ID MATCHES "MSVC" )
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STRING(REGEX REPLACE "/W[0-9]" "/W4" CMAKE_CXX_FLAGS ${CMAKE_CXX_FLAGS}) # override default warning level
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target_compile_options( ${target} PRIVATE /w44265 /w44061 /w44062 /w45038 )
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endif()
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endforeach()
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endif()
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if (NOT MSVC)
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set(CHECKED_WARNING_FLAGS
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"-Wabsolute-value"
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"-Wall"
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"-Wc++20-compat"
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"-Wcall-to-pure-virtual-from-ctor-dtor"
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"-Wcast-align"
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"-Wcatch-value"
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"-Wdangling"
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"-Wdeprecated"
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"-Wdeprecated-register"
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"-Wexceptions"
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"-Wexit-time-destructors"
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"-Wextra"
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"-Wextra-semi"
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"-Wfloat-equal"
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"-Wglobal-constructors"
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"-Winit-self"
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"-Wmisleading-indentation"
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"-Wmismatched-new-delete"
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"-Wmismatched-return-types"
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"-Wmismatched-tags"
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"-Wmissing-braces"
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"-Wmissing-declarations"
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"-Wmissing-noreturn"
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"-Wmissing-prototypes"
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"-Wmissing-variable-declarations"
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"-Wnull-dereference"
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"-Wold-style-cast"
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"-Woverloaded-virtual"
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"-Wparentheses"
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"-Wpedantic"
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"-Wreorder"
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"-Wreturn-std-move"
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"-Wshadow"
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"-Wstrict-aliasing"
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"-Wsuggest-destructor-override"
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"-Wsuggest-override"
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"-Wundef"
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"-Wuninitialized"
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"-Wunneeded-internal-declaration"
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"-Wunreachable-code"
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"-Wunused"
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"-Wunused-function"
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"-Wunused-parameter"
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"-Wvla"
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"-Wweak-vtables"
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# This is a useful warning, but our tests sometimes rely on
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# functions being present, but not picked (e.g. various checks
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# for stringification implementation ordering).
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# Ergo, we should use it every now and then, but we cannot
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# enable it by default.
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# "-Wunused-member-function"
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)
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foreach(warning ${CHECKED_WARNING_FLAGS})
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add_cxx_flag_if_supported_to_targets(${warning} "${targets}")
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endforeach()
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if (CATCH_ENABLE_WERROR)
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foreach(target ${targets})
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# Enable Werror equivalent
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target_compile_options( ${target} PRIVATE -Werror )
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endforeach()
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endif()
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endif()
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endfunction()
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# Adds flags required for reproducible build to the target
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# Currently only supports GCC and Clang
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function(add_build_reproducibility_settings target)
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# Make the build reproducible on versions of g++ and clang that supports -ffile-prefix-map
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if(("${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU" AND NOT ${CMAKE_CXX_COMPILER_VERSION} VERSION_LESS 8) OR
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("${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang" AND NOT ${CMAKE_CXX_COMPILER_VERSION} VERSION_LESS 10))
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target_compile_options(${target} PRIVATE "-ffile-prefix-map=${CATCH_DIR}=.")
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endif()
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endfunction()
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